Adjustable shell



1,646,030 1927' A. E. LINENDOLL ADJUSTABLE SHELL Filed Dec, 16, 1926gnwntoz jfa ozznmzdd fl Patented Oct. 18, 1927.

UNITED STATES ASA n. Lnnmnou,

OF NORWALK, OHIO.

ADJUSTABLE SHELL.

Application filed December connection with cylindrical bodies that follow standard sizes. Thus my invention rovides a means whereby a shell ofany orm may be-readily fitted to any other of a plurality of sizes ofpipes that follow a standard rule with reference to their differentdiam.- eters.

The invention is particularly advantageous when used in connection withautomobile l5 heaters wherein a shell is located around an exhaust pipe.Such pipes vary in sizes according to a recognized standard and theshell member embodying my invention is so constructed that it may bereadily formed so that it will fit at its ends, around the pipe and forma chamber between the pipe and the wall of the heater. This provides aspace wherein air may be, by movement of the car, forced between theexhaust pipe of the automobile, a suitable outlet bemg'provided fordirecting the air that is heated in the chamber within the heater intothe car.

The invention may be contained in structures of different forms and usedfor a great variety of purposes. To illustrate a practical applicationof the invention, I have selected a structure containing the invention,and shall describe it hereinafter. The structure selected as an exampleof the different embodiments of my invention is shown in theaccompanying drawings. I

Figure 1 of the drawings illustrates a s de view of a heater thatembodies my invention and shows the position in which it may be placedaccording to the shape or form of the exhaust pipe of an automobile.Figure 2 illustrates the heater located in a second position. Figure 3is an end view of the heater when in the position shown in Figure 2.Figure 4 is a View of a longitudinal section taken on the plane of theline indicated in Figure 3. Figure 5 is a view of a transverse sectiontaken on the plane of the line 5-5 indicated in the Figure 4.

Figure 6'is a top view of a register which may be opened or closed toallow the heated air from the heater to enter the interior of theautomobile. Figure 7 is a view of a section taken on the plane of theline 7-7 indicated on the Figure 6.

In the arrangement shown in Figure 1,

16, 1926. Serial no. 155,284.

the heater 2 which is made in the form of a shell is placed on theexhaust pipe 3 which is cylindrical in form at a point where'the exhaustpipe slopes upward towards the engine. The heater 2 is provided with ascoop-shaped inlet 4, the heater having an opening 5 at one end coveredby, a cowl or visor 6 or otherair collector. In the movement of the car,the inlet 4 will catch the air and it will be directed into the heaterand along the exhaust pi e 3 and out through an outlet, 8. The out et isconnected by a suitable pipe, such as, the pipe 9 with a register 10.The register 10 may be provided with a flange 11 for receiving the endofthe pipe 9. The flange 11 may extend through the floor boards 12 ofthe automobile and thus the air which is heated by the heater will beforced through the heater and into'the car body.

The heater is so constructed that-either end may be located towards theengine,the cowl 6 being made removable or reversible so as to be turnedtowards the forward end of the car to catch the air when the car is inmotion. Such an arrangement is shown in the Figure 2 where the 1ntakeendof the heater is located to the rear of the point of the location ofthe register. The heater is also provided with an opening, 14 that isformed in the heater shell at a point diametrically opposite to theopening 5; The

opening 14 may be closed with a cover plate.

15 that is secured byscrews 16 in the same manner that the cowl 6 issecured by the screws 17 to the heater. Thus, when it is desired tolocate the cowl 6 on the same side of the heater that the outlet 8 islocated on, the cover plate 15 and the cowl 6 may be interchanged andsecured to the heater. Also,

the cowl 6 may be pointed in either direction with reference to thecenter of the heater, it being understood, however, that the cowl, 6 isalways pointed towards the front of the car, that is, soas to receivethe air under the pressure that is produced by the movement of theautomobile, or more particularly, by the movement of the cowl.

In order to adapt the heater for the different sizes of exhaust pipe,whichfollow accepted standards, the ends of the heater are provided withstepped portions 20. The portions of the inner and outer surfaces of.the stepped portions are likewise step ed relative to each other. Theinner cylm ical surfaces such as the surfaces 21 overlap the exteriorcylindrical surfaces such as the surfaces 22. The distance between thesesurfaces is very small compared to the thicknesses of the portions ofthe stepped ends of the heater. The exterior plane surfaces, such assurfaces 23, arelocated parallel to'thc interior plane surfaces, such asthe surfaces '24, and the planes of the outer plane surfaces are locatednearer the center of the heater than the planes of the inner planesurfaces of the juxtaposed stepped portions that are smaller indiameter. As, for example, the step is defined by 'the cylindricalsurfaces 21 and 22, and by the plane surfaces 23 and 24. The step 26 isdefined by similar surfaces and in the sameway. The step 25 is in orderto remove the steps that have inner diameters that aresmaller than thepipe to which the heater is to be fitted. This may be used in connectionwith a great variety of shells where they are to be fitted tocylindrical bodies of different sizes.

The steps that are tobe removed, in order to produce a fit between theshell and the cylmdrical member, such as the pipe, may be cut off b asaw or by one or two blows of a chisel. his may be readily done in viewof the fact that the webs that join the..p0r'tions of the stepped flangeat each end of theheat er are relatively quite thin. When the webs aresawed, the inner and outer plane surfaces 23 and 24 form a guide forthe-saw, the distances between the planesof. these plane surfaces beingat the proper distance to'act as guides for an ordinary iron saw.- Theheater may be 'providedwith inward- 1y extending ribs, 30 in order toaid in directing air through the heater. Also the flange 11 of theregister may be connected to a plate 31 and the plate 31 may be coveredwith a plate 32 having a plurality of openings 33. The two plates 31 and32 rovide means for inclosing a disk or cover p ate, 34.

The flange 11 may be located at one end of i with a pin 36 that extendsthrough the slot 35. A washer, 37, may be located on the pin 36 and aspring 38 may be located .be tween the cover late 34 and the washer 37'so as to hold t e cover plate 34 against the plate 31 and thus totlghtly close the passage-way from the heater and shut off the heat thatis conveyed to the interior of the car by the movement of the air intothe car when the cover plate 34 is open.

1. combination, a shell member and a cylindrical member, the shellmember having a stepped circular flange, the steps joined by relativelythin cylindrical webs whereby stepped portions may be removed byseparating the steps from the body of the shell along the webs leaving astepped portion whose inner diameter is substantially the same as thatof the cylindrical member. 2. In an automobile heater a shell having endportions fitting the exhaust pipe of the automobile engine, the body ofthe shell spaced from the pipe to form a chamber be-' tween the wall ofthe shell and thepipe, one

end of the shell having openings located diametrically opposite eachother, an interchangeable plate and an air collector for covering theopenings, the other end of the shell having an opening, and a registerconnected with the last named o ening.

In witness whereof have hereunto signed my name to this specification.

ASA E. LINENDOLL.

